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    <script>
        // const 定义常量
        const SCHOOL = '尚硅谷';

        // 1、一定要赋初始值
        // const A;
        // 2、一般常量使用大写(潜规则)
        const A = 100;
        // 3、常量的值不能修改
        // SCHOOL = 'SHANGGUIGUI';
        // 4、块级作用域
        // {
        //     const PLAYER = 'UZI';
        // }
        // console.log(PLAYER);
        // 5、对于数组和对象的元素修改，不算做对常量的修改，不会报错
        const TEAM = ['UZI','PG','SG','SF'];
        TEAM.push = ('PF');
        console.log(TEAM);
    </script>
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